Efficient out-coupling and beaming of Tamm optical states via surface plasmon polariton excitation
Efficient out-coupling and beaming of Tamm optical states via surface plasmon polariton excitation
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DOI：
10.1063/1.4882180
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发表时间：
2014-06
影响因子：
4
通讯作者：
M. López-García;Y. Ho;M. Taverne;Lifeng Chen;M. M. Murshidy-M.;A. P. Edwards;M. Serry;A. Adawi;J. Rarity;R. Oulton
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文献类型：
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作者：
M. López-García;Y. Ho;M. Taverne;Lifeng Chen;M. M. Murshidy-M.;A. P. Edwards;M. Serry;A. Adawi;J. Rarity;R. Oulton
我们提出了光学Tamm态与表面等离子激元（SPP）耦合的证据。实验证明，对于表面有薄金属层的Bragg堆叠，在空气-金属界面上引入光栅可以激发混合tam - spp模式。通过光栅向自由空间传输的外耦合可以增强传输光束的传输能力、方向性和偏振选择能力。我们建议该系统将在那些需要金属电接触以及光束和偏振控制的设备上有用。
We present evidence of optical Tamm states to surface plasmon polariton (SPP) coupling. We experimentally demonstrate that for a Bragg stack with a thin metal layer on the surface, hybrid Tamm-SPP modes may be excited when a grating on the air-metal interface is introduced. Out-coupling via the grating to free space propagation is shown to enhance the transmission as well as the directionality and polarization selection for the transmitted beam. We suggest that this system will be useful on those devices, where a metallic electrical contact as well as beaming and polarization control is needed.